Abstract
The natural minerals of the Tebinbulak deposit, which are used as a thermal insulation material, have been studied, while their swelling coefficient depends on the size of the raw material and ranges from 3.47 to 7.67. The structure of the material has been studied by X-ray diffraction and infrared spectroscopy. The chemical composition has been determined by the microprobe method, and phase transformations during heating by differential scanning calorimetry. The obtained-information allowed us to conclude that this micaceousmineralis at the initial stage of metamorphism: disordered interlayer structure of phlogopite/vermiculite (hydrophlogopite). The information is important when discussing the influence of the structure of hydrosludes on the possibility and nature of their swelling during heating.
Published Version
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